Note: If relay is solid state, or microprocessor-based, and requires a DC logic voltage prior to
applying test, connect the relay dc power terminals to the
BATTERY SIMULATOR
terminals. The
Battery Simulator voltage may be set and turned on in the Relay Test Screen.
9.
Select
Relay Settings
. The following screen should appear. Enter the
Relay Tap
, and
Time Dial
values. Enter the desired
Test Multiple
(the multiplier used to determine the
test current to applied to the relay, i.e. Test Multiple * Relay Tap = Test Current). Set the
No. of Operations
. Unlike the standard reclosing relay, the distribution relay will trip the
breaker (sensed on BINARY INPUT #1) to toggle the BINARY OUTPUT contacts. Note, if
the reclosing relay is a three shot to lockout, then set the number of operations to 4. Set
Reclose Ops
(Shot Count) to the desired value (the number of reclose operations that the
relay is set for). A maximum of 9 reclose operations (shots) may be recorded.
Figure 86 Reclosing Relay Setting Screen
10.
Press the
Delay Time
window, and enter 0 (zero). When set to zero the logic in the test
set should be to look at BINARY INPUT #1 and wait for the trip contacts to close. When
the relay trip contacts close, the trip time is recorded, the output current is turned off and
the BINARY OUTPUT contacts will be toggled.
11.
Press the
Lockout Time
window, and set the desired total time to lockout. Note: this is the
total time to lockout, which includes the relay reclose time delays and the expected total
operating (trip) time of the relay’s individual tripping operations. Therefore, allow this time
plus an additional second or two for the relay to totally lockout. At the end of the Lockout
Time, any voltage output set in the setting screen will be removed from the relay and the
test is completed.
12.
Press the Timer Setup button. The Timer Setup Screen should appear.
13.
The
Timer Setup Screen
has already been modified for testing a reclosing relay. The
BINARY INPUT Terminals
T1
and
T2
were selected and set to
STOP
the Timer upon
N.O.
(Normally Open) contacts closing.
T1
is associated with the relay trip contacts and
T2
is
associated with the relay reclosing contacts. The
Latch
was set
On
so that the timer
would stop on first contact closure, thus ignoring any contact bounce. The Timer was
defaulted to measure time in
Seconds
.
-
115
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